Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 12:17 AM
Duration
131.78 ms
Status
204
Response Size
31 KB
Error
No

Performance Breakdown

Database
5.9% (6 queries)
View Rendering
15.2%
Application Logic
78.9%
Other Operations
0.0%
Total Operations
24
Slowest Operation
131.78 ms

Request Trace

How to read this

Each row is a layer of your stack. Many short Database bars means N+1 queries — fix with includes(). A wide Action bar with little Database time means slow Ruby code. A wide View bar usually means a partial rendered in a loop.

Action
View
Database
Other
Action
View
Database
0.0ms 376.0ms 752.0ms 1128.0ms 1504.1ms

Operations

How to use this

Sort by Impact to find your biggest wins. Click any row for details and optimisation suggestions. The same SQL appearing multiple times is an N+1 — fix with includes(). A single operation above 50% impact is your highest priority.

Operation Duration Impact Timeline Actions
layouts/application 40 ms 30.4%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 25 ms 19.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 10 ms 7.6%
home/index 33 ms 25.0%
home#api_complex 132 ms 100.0%
home#api_complex 132 ms 100.0%
layouts/application 7 ms 5.3%
posts/show 38 ms 28.8%
posts/show 21 ms 15.9%
home#api_complex 132 ms 100.0%
posts/show 6 ms 4.6%
home#api_complex 132 ms 100.0%
home#api_complex 132 ms 100.0%
users/index 34 ms 25.8%
DELETE FROM comments WHERE created_at < ? 3 ms 2.3%
home#api_complex 132 ms 100.0%
users/index 38 ms 28.8%
home#api_complex 132 ms 100.0%
users/index 12 ms 9.1%
SELECT name FROM users 25 ms 19.0%
SELECT users.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, SUM(posts.view_count) as total_views, AVG(posts.view_count) as avg_views, MIN(posts.created_at) as first_post, MAX(posts.created_at) as latest_post FR... 6 ms 4.6%
home#api_complex 132 ms 100.0%
home#api_complex 132 ms 100.0%
SELECT users.*, posts.*, comments.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, AVG(posts.view_count) as avg_views, MAX(comments.created_at) as latest_comment FROM users LEFT JOIN posts ON users.id = posts.use... 20 ms 15.2%